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<html>
  <head><link rel="stylesheet" type="text/css" href="../stylesheets/style.css">
<title>Native2Ascii Task</title></head>
  <body>
    <h2>Native2Ascii</h2>

    <h3>Description:</h3>

    <p>
      Converts files from native encodings to ASCII with escaped Unicode.
      A common usage is to convert source files maintained in a native
      operating system encoding, to ASCII prior to compilation.
    </p>

    <p>
      Files in the directory <em>src</em>
      are converted from a native encoding to ASCII.
      By default, all files in the directory are converted.
      However, conversion may be limited to selected files using
      <em>includes</em> and <em>excludes</em> attributes.
      For more information on file matching patterns,
      see the section on
      <a href="../dirtasks.html#directorybasedtasks">directory based tasks</a>.
      If no <em>encoding</em> is specified,
      the default encoding for the JVM is used.
      If <em>ext</em> is specified, then output files are renamed
      to use it as a new extension.
      More sophisticated file name translations can be achieved using a nested
      <em><code>&lt;mapper&gt;</code></em> element. By default an
      <a href="../Types/mapper.html#identity-mapper">identity mapper</a> will be used.
      If <em>dest</em> and <em>src</em> point to the same directory,
      the <em>ext</em> attribute or a nested <em><code>&lt;mapper&gt;</code></em>
      is required.
    </p>

    <p>
      This task forms an implicit <a href="../Types/fileset.html">File Set</a>,
      and supports most attributes of <code>&lt;fileset&gt;</code>
      (<code>dir</code> becomes <code>src</code>) as well as
      nested <code>&lt;include&gt;</code>, <code>&lt;exclude&gt;</code>,
      and <code>&lt;patternset&gt;</code> elements.
    </p>

    <p>It is possible to use different converters. This can be selected
      with the <code>implementation</code> attribute or a nested element.
      <a name="implementationvalues">Here are the choices of the attribute</a>:</p>
    <ul>
      <li>default - the default converter for the platform - kaffee
        when run on Kaffee, builtin if JDK9 or newer is detected, sun
        otherwise.</li>
      <li>sun (the standard converter of the JDK < 9)</li>
      <li>kaffe (the standard converter
        of <a href="http://www.kaffe.org" target="_top">Kaffe</a>)</li>
      <li>builtin - Ant's internal implementation used for
        JDK9+. <em>since ant 1.9.8</em></li>
    </ul>

    <table border="1" cellpadding="2" cellspacing="0">
      <tr>
        <td><b>Attribute</b></td>
        <td><b>Description</b></td>
        <td><b>Required</b></td>
      </tr>
      <tr>
        <td>reverse</td>
        <td>Reverse the sense of the conversion,
          i.e. convert from ASCII to native <b>only supported by the
            sun and builtin converters</b></td>
        <td align="center">No</td>
      </tr>
      <tr>
        <td>encoding</td>
        <td>The native encoding the files are in
          (default is the default encoding for the JVM)</td>
        <td align="center">No</td>
      </tr>
      <tr>
        <td>src</td>
        <td>The directory to find files in (default is <em>basedir</em>)</td>
        <td align="center">No</td>
      </tr>
      <tr>
        <td>dest</td>
        <td>The directory to output file to</td>
        <td align="center">Yes</td>
      </tr>
      <tr>
        <td>ext</td>
        <td>File extension to use in renaming output files</td>
        <td align="center">No</td>
      </tr>
      <tr>
        <td>defaultexcludes</td>
        <td>indicates whether default excludes should be used or not
          (&quot;yes&quot;/&quot;no&quot;).
          Default excludes are used when omitted.
        </td>
        <td align="center">No</td>
      </tr>
      <tr>
        <td>includes</td>
        <td>comma- or space-separated list of patterns of files that must be
          included. All files are included when omitted.</td>
        <td align="center">No</td>
      </tr>
      <tr>
        <td>includesfile</td>
        <td>the name of a file. Each line of this file is
          taken to be an include pattern</td>
        <td align="center">No</td>
      </tr>
      <tr>
        <td>excludes</td>
        <td>comma- or space-separated list of patterns of files that must be excluded.
          No files (except default excludes) are excluded when omitted.</td>
        <td align="center">No</td>
      </tr>
      <tr>
        <td>excludesfile</td>
        <td>the name of a file. Each line of this file is
          taken to be an exclude pattern</td>
        <td align="center">No</td>
      </tr>
      <tr>
        <td valign="top">implementation</td>
        <td valign="top">The converter implementation to use.
          If this attribute is not set, the default converter for the
          current VM will be used.  (See the above <a
          href="#implementationvalues">list</a> of valid converters.)</td>
        <td align="center" valign="top">No</td>
      </tr>
    </table>

<h3>Parameters specified as nested elements</h3>

<h4>arg</h4>

<p>You can specify additional command line arguments for the converter
with nested <code>&lt;arg&gt;</code> elements.  These elements are
specified like <a href="../using.html#arg">Command-line Arguments</a>
but have an additional attribute that can be used to enable arguments
only if a given converter implementation will be used.</p>

<table border="1" cellpadding="2" cellspacing="0">
<tr>
  <td width="12%" valign="top"><b>Attribute</b></td>
  <td width="78%" valign="top"><b>Description</b></td>
  <td width="10%" valign="top"><b>Required</b></td>
</tr>
  <tr>
    <td valign="top">value</td>
    <td align="center" rowspan="4">See
    <a href="../using.html#arg">Command-line Arguments</a>.</td>
    <td align="center" rowspan="4">Exactly one of these.</td>
  </tr>
  <tr>
    <td valign="top">line</td>
  </tr>
  <tr>
    <td valign="top">file</td>
  </tr>
  <tr>
    <td valign="top">path</td>
  </tr>
  <tr>
    <td valign="top">implementation</td>
    <td>Only pass the specified argument if the chosen converter
    implementation matches the value of this attribute.  Legal values
    are the same as those in the above <a
    href="#implementationvalues">list</a> of valid compilers.)</td>
    <td align="center">No</td>
  </tr>
</table>

<h4>implementationclasspath <em>since Apache Ant 1.8.0</em></h4>

<p>A <a href="../using.html#path">PATH like structure</a> holding the
  classpath to use when loading the converter implementation if a
  custom class has been specified.  Doesn't have any effect when
  using one of the built-in converters.</p>

<h4>Any nested element of a type that implements Native2AsciiAdapter
  <em>since Ant 1.8.0</em></h4>

<p>If a defined type implements the <code>Native2AsciiAdapter</code>
  interface a nested element of that type can be used as an
  alternative to the <code>implementation</code> attribute.</p>

    <h3>Examples</h3>

    <pre>
&lt;native2ascii encoding=&quot;EUCJIS&quot; src=&quot;srcdir&quot; dest=&quot;srcdir&quot;
   includes=&quot;**/*.eucjis&quot; ext=&quot;.java&quot;/&gt;
    </pre>

    <p>
      Converts all files in the directory <em>srcdir</em>
      ending in <code>.eucjis</code> from the EUCJIS encoding to ASCII
      and renames them to end in <code>.java</code>.
    </p>

<pre>
&lt;native2ascii encoding=&quot;EUCJIS&quot; src=&quot;native/japanese&quot; dest=&quot;src&quot;
   includes=&quot;**/*.java&quot;/&gt;
</pre>

    <p>
      Converts all the files ending in <code>.java</code>
      in the directory <em>native/japanese</em> to ASCII,
      placing the results in the directory <em>src</em>.
      The names of the files remain the same.
    </p>

<p>If you want to use a custom
  Native2AsciiAdapter <code>org.example.MyAdapter</code> you can either
  use the implementation attribute:</p>
<pre>
&lt;native2ascii encoding="EUCJIS" src="srcdir" dest="srcdir"
       includes="**/*.eucjis" ext=".java"
       implementation="org.example.MyAdapter"/&gt;
</pre>
<p>or a define a type and nest this into the task like in:</p>
<pre>
&lt;componentdef classname="org.example.MyAdapter"
              name="myadapter"/&gt;
&lt;native2ascii encoding="EUCJIS" src="srcdir" dest="srcdir"
       includes="**/*.eucjis" ext=".java"&gt;
  &lt;myadapter/&gt;
&lt;/native2ascii&gt;
</pre>
<p>in which case your native2ascii adapter can support attributes and
  nested elements of its own.</p>
  </body>

</html>
